Find the product of the expressions — task. Mathematics CBSE, Class 8.

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1) (

$c+$ 3) (

$l+7$ )

$=$

$c l + 7 c + 3 l + 21$
$c l + l + 3 l + 21$
$c l + 21 + 3 l + c$

$(4 m^{2} + 18) (8 m + 9 n + 4)$

$=$

$i i^{i} + 36 i^{2} n + 16 i^{2} + i m + 162 i + 72$ .

(Note: Write the answer in standard monomial form and enter numbers and variables in separate windows; enter the powers in windows next to variables.)

$1$

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8. Find the product of the expressions

Exercise condition: